image overlap message for exposure 1 of trigger 814305
uvot_overlap.pl vrs. 2010-12-20b fem started at 180315d03h21m29s447569usUT
The observation of trigger 814305 started 2018-03-14T22:25:31.7
Examining file ./814305_g114_uvot_sky_image.fits
The exposure ID is 542759131
The exposure time is 149.857 (seconds)
The filter is WHITE.
*** Warning -- found 18231 null pixels in the image.
The uvot region is centered at (297.8995,23.6246) with a roll angle of 106.9
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (297.8660,23.6230) with a radius of 3.000 arc min
This is 1.846 arc min from the center of the uvot region
The area of the BAT error circle is 28.27 sq. arc min
The UVOT/BAT overlap is at most 5.57 sq. arc min or 0.20 of the BAT error circle
The XRT error circle is centered at (297.8867,23.6241) with a radius of 0.025 arc min
This is 0.708 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.00 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 814305
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180315d03h21m37s576255usUT
Observation start time is 2018-03-14T22:25:31.7
Examining file ./814305_g114_uvot_catalog_image.fits
The exposure ID is 542759131
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 14 detected source(s) for 814305_g114
Aspect correction adds -0.00012 degrees (-0.028 sec of time = -0.39 arc sec) to RA
Aspect correction adds -0.00060 degrees (-2.17 arcsec) to Dec
Total aspect correction is 2.20 arcsec
Star catalogs centered at 297.9061 , 23.6344 with radius 2.38 arc min.
n_usno: 324 n_gsc: 428
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.07022
RA DEC Mag Color
bright star 0: 297.91705 (19:51:40.09) 23.66289 (+23:39:46.4) 11.07 USNO-V
bright star 1: 297.93396 (19:51:44.15) 23.65223 (+23:39:08.0) 11.34 USNO-V
Mean distance difference (CAT_DELTA) for 15 matched entries is 0.606" for 814305_g114
Mean and std. dev of mag. difference (MAG_DELTA) are 1.494 and 0.805 for 814305_g114
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 814305_g114.
Acceptable entries have no ID, XRT distances < 5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=297.8660 (19:51:27.84) DEC=23.6230 (+23:37:22.8)
XRT distances are from RA=297.8867 (19:51:32.80) DEC=23.6241 (+23:37:26.6)
Found 2 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
297.8864 23.6251 4.0 -1 USNO-B1 18.30 16.73 17.43
297.8864 23.6251 3.7 -1 GSC2.3 17.12 18.58 17.93
The closest star is 3.68" away.
List UVOT sources within 10" of the XRT position:
There are 4353.7510 counts in the bkg source region of 289.00000 pixels.
Rate in bkg region from 0 to 45 arcsec is 15.065 counts/pixel (5-sig UL in 4" is 19.88 mag) for 814305_g114
There are 0.0000000 counts in the xrt source region of 0.0000000 pixels.
There are 0.0000000 counts in the xrt_bkg source region of 0.0000000 pixels.
There are no candidates inside BAT error circle, but outside XRT error circle.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.43, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 814305_542759131_180315d03h21m37s576255usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(297.8995,23.6246,45")
fk5;-circle(297.910313618906,23.6303696356463,6")
Region file: 814305_542759131_180315d03h21m37s576255usUT_xrt.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(297.88667,23.62406,8")
Region file: 814305_542759131_180315d03h21m37s576255usUT_xrt_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(297.88667,23.62406,25")
fk5;-circle(297.88667,23.62406,15")
image paragraph message for exposure 1 of trigger 814305
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no overlap
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB180314 (Swift/BAT trigger 814305) at 22:23:36 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 94 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. The 2.7'x2.7' sub-image covers none of
the XRT error circle. The 8'x8' region for the list of sources generated
on-board covers 100% of the XRT error circle. Because of the density of
catalogued stars, further analysis is required to report an upper limit for any
afterglow in the region. No correction has been made for the large, but
uncertain, extinction expected.
------- notes for trigger 814305 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180315d03h21m40s383608usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=814305
-expid=542759131 -meonly -msg_image
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/814305/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Large extinction of 7.09 found for bat position. Unreliable extinction found
for xrt position. XRT position found for srclist. XRT position found for Genie
image. BAT position found.
UVOT exposure began at MET 542759131.68668 or about 2018:073:22:25:26 UT
Found 2888 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 52% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 23 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
Found 14 source(s) in Genie image catalog. Found 0 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.43 mag. Found 428 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
52% of the Genie image region. The Genie image is INCOMPLETE with 18231 null
pixels.
Genie image analysis:
Found 4353.8 counts in the large background region of 289.0 pixels or a rate of
15.065 counts/pixel in a radius of 45.0 arcsec. Based on this background, the
typical 5-sigma UL at a random point in the Genie image is 19.88 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 19.27 mag. The closest srclist
source has ra= 297.8887 dec= 23.6289 mag=18.74 sep=18.80". The closest Genie
source has ra= 297.9103 dec= 23.6304 mag=18.90 sep=81.22".
All AG candidates sorted by magnitude for the current finding chart.
(U/V/White SRCLIST mags < 17.5/17.5/18.5 are reliable. Mag > 18.5/18.5/19.5 are
not. Others are uncertain.)
(U/V/White Genie image mags < 18.0/18.0/19.0 are reliable. Mag > 19.0/19.0/20.0
are not. Others are uncertain.)
(Magnitudes followed by * have been corrected for exposure.)
---MET--- -dt- filter ---RA-- ---DEC--- -MAG/Limit Dist(") Source Asp.Corr?
542759131 93 WHITE srclist found no candidates.
542759131 93 WHITE image found no candidates.
List afterglow candidates for other finding charts.
542759345 307 U srclist found no candidates.
542759345 307 U image found no candidates.
542759899 861 WHITE srclist found no candidates.
542759899 861 WHITE image found no candidates.
------- Tokens for Quick GCN -------